Exercises like sudoku and crossword puzzles are more effective than herbal supplements and vitamins to keep your memory in good shape, say experts.

St Michael’s Hospital in Toronto, Canada, sifted through published research to analyse the most effective ways to keep the brain active and prevent cognitive decline in healthy older adults. They found no strong evidence to show that prescribed medication or vitamins such as B6 or omega-3 fatty acids could improve memory, thought or judgement. Instead, they found that mental exercises such as crossword puzzles, and even computerised brain-training programmes, could have more effect in preventing cognitive decline.

With the number of people in the UK with Alzheimer’s expected to soar to more than a million by 2021, we can expect to see more of this type of survey advising on the best way to keep your memory in tip-top shape. Other research out recently suggests that listening to sounds while you sleep can help your memory. While smelling rosemary oil can help you recall events from your past and remember to do things in future.